I'm sure we've had all of these things go bad at various points, but I'm -real- insistent on trying hard not to ignore things for too long, and will not-infrequently plan meals around "what needs to get used up."

Bread is most often for us but my excuse for that is that we nearly always make our own these days, which means it starts being inedible within just a few days.

I've also had soda (bottles) go flat, unopened in the pantry.